diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2c19800..f8df946 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -29,6 +29,9 @@ repos:
     rev: 23.9.1
     hooks:
       - id: black
+      - id: black-jupyter
+        args: [--line-length=85]
+        types_or: [jupyter]
 
   - repo: https://github.com/editorconfig-checker/editorconfig-checker.python
     rev: 2.7.2
diff --git a/visualize-benchmark.ipynb b/visualize-benchmark.ipynb
index 3c3eba1..6253a17 100644
--- a/visualize-benchmark.ipynb
+++ b/visualize-benchmark.ipynb
@@ -17,6 +17,7 @@
     "    with open(filename, \"rb\") as f:\n",
     "        return pickle.load(f)\n",
     "\n",
+    "\n",
     "benchmarks: dict[int | str, TimeitResult] = {}\n",
     "benchmarks[\"all\"] = load_benchmark(f\"timing_all.pickle\")\n",
     "for i in range(12):\n",
@@ -39,7 +40,7 @@
     "        # if k % 2 == 0\n",
     "        # if k < 6\n",
     "    }\n",
-    ")\n"
+    ")"
    ]
   },
   {